Telephone



July 29, 1930.

TELEPHONE Original Filed June 1928 J. O. CADIEUX INVENTOR 4 Sheets-Sheet l Jul 29, 1930.

J. O. CADIEUX TELEPHONE Original Filed June 1. 1928 4 Sheets-Sheet 2 INVENTOR July 29, 1930. J. o. CADIEUX Ref 17,751

TELERHONE Original Filed June 1. 1928 4 Sheets-Sheet s July 29, 1930. J. o. CADIEUX 5 TELEPHONE Original Filed June 1, 1928 4 Sheets-Sheet 4 INVENTOR Tau Reis sued July 29, 1930 JOSEPH o'. sermon-or MERIIJEN, CONNECTICUT, AssIGNoR, BY MESNE ASSIGNMENTS,

T CONNECTICUT TELEPHONE & ELECTRIC our, AfcoRronArIo'N OF DELAWARE CORPORATION, or mnnrnnn; CONNECTI- Original N0,'1,717,091, dated June 11, 1929,-Seria1 No. 282,102, filed Jane 1, 1928.

Application for reissuefiled June 9, 1930. Ser1a1 No.'460,071'.

My invention relates particularly to what are sometimes termed apartment housetelephones. I

One Object is toprovide a construction 6 which can be readily installed and wired,

Another object is to provide a construction which iscompact and yet capable of connection and use'in a variety of different ways.

Another'object is to rovide a construction of the character descri ed-which can-be economically made and assembled.

' Another object is to' provide a telephone of this character having a receiver with cord extension, but-without any protruding hook orstud. a

A nother object is to provide an insulating support -for the transmitter, bell, receiver switch, push buttons and all" the electrical.

connections therefor. Anotherobject is to provide a. construction ofthe above-character'which can be readily plugged into. and removed from wall con nections without the use of binding posts,.

screws, or the like. I

In the'preferred form the apparatus comprises a casing or housing'composed of two ,parts, namely, a wall or supporting back member and a frontor detachable body member. The back. member carries a series of the bell, the push buttons, the receiver switch and all the necessary connections, together with blades adaptedto be plugged into the sockets.- One of the parts has-aflange' serv ing to laterally surroundYthe: transmitter, Jvibratorfswitches. and electrical connections.

F ig. 1 is arear view'of the frontp'a'rt of.

vention showin'g the"bellpartly broken. away and showingthe receiversuspended from the hook switch I 'Fig. 2 is a vertical sectional view. on the receiver suspendedfrom the hook'beneath the casing. I

Fig. 3 is a'frontview'of the backipart or 'plate of theconstruction shown. in 2,

the front part being omitted or removed.

fment of the construction of stationary jaws or sockets which are' electfic ally connected to the housea'wiring systennq undthe frontmember carries the transmitter,

one form of construction embodying my iii-- 1-19 of the line 22 of Fig.1 SbOW p at-lve posltlons when installed. The parts Fig.4 is a.h orizontal sectional View on the plane of the line 44 of Fig. 1, the back plate and attached parts being shown associated therewith. v I i i Fig. 5 isa perspective" view ofthe'frame of the vibrator and its armature.

F g. 6 is a rear view of the front member of a modifiedform of construction.

Fig- 7 isa front view of theback member with which the member of F ig 6-is adapted 'tobe associated.

Fig. 8 is ahoriz'ontal section and end viewof the device'of Figs. 6 and 7 associated looklngmpwardly. v I

1g. 9 is a vertical sectional viewof a -f rag I Fig. 6011 a larger scale. a f Fig. 10

"sulating features of F ig. 6 and'showing parts in secltion .on the plane of the line '10' -10 of Figz'll isia side view and I artial section of the construction shown in ig. '10 with the face plate in place.

' In the construction shown oILShbets 1 and .2, the backplate 10 and the front plate 11, together with thewallf12 constitute the recepjtacle or casing. .In this case the backplate, is formed; of metal and provided with a number of pairs of slots 13. 14, 15' and 16 to facilitatethe connection of the back )late by meansof screws to any ofthe usual arms of outlet boxes commonly employed when the house'wiring is tobe concealed. 1 The elongati'on of these-slots permits a considerable degree of angular rotation '50 as toenahle the telepho'ne box to be installed vertically eyen though the outlet box may be some- Qterfitting-f guide IIIBIIIlfll'S such asthe posts lTand'the sockets: 18 so that the parts of the casing maybe brought into their proper r'elmay be securedtogether by screws 19 passing thronghthe face plateinto the posts 17. Although I have shown the casing of theconventio'nalrectangularform it is obvious acw p is a frontview of. 'anotherform. of construction embodying electrical and in:

cording to my invention that the casing might be made of any shape.

he outer or front plate may be formed in tegrally with the surrounding flange or wall 12 or separate, as will be seen in the forms shown in Sheets 3 and 4.

For wiring purposes I provide an insulating block which is secured in a suitable manner to the back plate, for instance, by screws 21. This block carries a series of terminal plates 22 each of which is secured in place by a screw such as 23, which also serves to anchor a spring jaw or socket member 24. Each plate has a binding screw 25 or other means of securing a line terminal. There will be as many of these terminal plates and sockets or contact jaws as there are circuit connections to be 'made with thetelephone.

The back plate is provided with an opening" 26 to admit the circuit wires (not shown).

The front member 11 in turn carries a number of contact terminal blades 27, to correspond with and fit the sockets or jaw member 24. Each of these blades 27 is suitably an chored to the insulation by a collar, screw, rivet, or other similar device 27'. embedded in 1a rib 11 of the insulation. These blades and sockets are so located and dimensioned that they come into engagement automatically after the positioning members 17 and 18 have been brought into alignment. .The result is that there is no possibility of improperly coni'lecting the blades and sockets since the interlooking and aligning members must first coact properly.

The telephone transmitterpreferably has a diaphragm member 30 and a microphonic device 31 which may be of suitable construetion. The microphonic element 31 may be connected to the diaphragm and supported by a cross bar 32 on the flange 33 and held in place by screws 34.

" screws 34 and .36 may also serve to anchor the conducting strips 37 and 38.

In back of the diaphragm 30 and surroundiugthe flange 33 is mounted the bell or alarm device 39 which may be secured to the cross bar 32 by one or morescrews 40, thus in effect providinga chamber behind the. diaphragm 3U. li'rca'se the diaphragm 30 is omitted the openings 11 serve to pass the sound vibrations of the bell 39. The vibrator is preferably made as a completely assembled unit adapted to be inserted in the casing. This unit comprises a coil 41- with an armature 42 and supported by a frame 43. This frame has a lug 44 which is directly connected with the core of the coil. The flange 45 supports the armature 42 through the medium ofthe spring member 416 which alsoserves as the movable part ofthe vibrator contact, the stationary part being secured to the lug Q7 of the frame. This frame may be secured, for instance, by one or-more screws 48 so that the vibrator may be readily installed or removed.

The receiver 50 may be of any suitable construction and its diaphragm may conveniently serve as a buzzer of the call system as will be hereinafter understood.

This receiver has the usual cord 51 with terminals 52 and 53 suitably anchored and electrically connected in the casing. In the form shown in the terminal 52'is connected by the strip 38 and contact 35 to the diaphragm 30. The other terminal 53 is connected to contact blade 60. One vibrator terminal is connected by strip 57 to strip 61 and switch contact 78., The other terminal of the vibrator coil is connected by a strip 58 to the blade 59. Y

A number of push button switches may be provided depending upon the installation desired, for instance, to open a front door of the building or to call the janitor or for other purposes. These push button switches are preferably arranged in line and each may consist of a button 70, a spring arm 71, and a stationary contact or bus bar 72. This statiouary member Z2 may becommon to two or more of the push button switches and may be anchored by one or more screws or rivets 73.-

The stationary end of each spring arm 71' priate points by strips or wires, for instance, 76 18 connected to 37, 77 is connected to 62 and thence to 55, and 78 is connected to 61. These flat conductors ensure accurate and permanent connections withoutthe use of loose wires or soldering.

In order to avoid projecting studs or'hooks such as are commonly employed in telephones of this character I have provided a special hook 80 mounted beneath the casing 011 which the usual eye 81 of the receiver may 5;

be hung. This hook is carried by a plunger 82 which isrecipmcable in a bushing 83 se cured in the bottom wallv of the casing. The upper end of this plunger is loosely connected to the outer end of the contact spring 77 so that the weight of the receiver normally holds the two contacts 77 and 78. together. The spring 84 on the inner end of the plunger 82 is sufiiciently strong to raise the contact 77 and press it against the contact 76 and the latter against contact 75 when therepose movement. The cord 51 is connecte by a link 87 to the rear end 88 of the. hook so that the hook switch-will be automatically drawn down to the normally inactive position in case the receiver has not been returned to the hook in the proper way.

p'loyed for certain purposes. Obviously an induction coil. 89 may be {used in modificmtions of this construction herein set forth.

Preferably all the conducting parts are secured by anchorage members such as 27' so as to avoid the use of separatednsulating strips, bushin s and washers.

;A row ofbmding screwsis provided for convenience in attaching the various conducting strips 'or'other wires suchas the receiver terminals 52, 53

In the form of the invention shown on Sheet 3 a rear member9O of the. casing is in r the .form of an outlet box intended to be mounted in the wallwithits outeredge flush with the surface of the wall as is'customary in structures of this character. The wire terminals'and stationary contacts for effecting the electrical connections withthe ,telephone instrument are all mounted on the insulating cross bar 91 which is supported by straps 92..and screws 93-which pass through lugs94in the front of the box.

The front member of the casing is made up of a body part 95 and a plate 96 which to' ,gether carry .the transmitter, the'receiver,

the vibrator, the hook switch, andthe push button and the necessary'electrical connecner. Thefront plate and the attached in I each form of-the lnventlon asherem illus- .tions. The part 95 is preferably formed of insulation and has grooves 97, 97 which cor-- respond with the projecting lugs 94, 98 at the edges of the openin'g'ofthe box so that the front member is properly directioned when inserted into the box, .The part 95 may be secured to the part 96 in any suitable mansulating member 95issecured in'position by blades 100 are anchored to the adapted tocoactwith the contact jaws or sockets; 103 which are carried by the insulats -.ing cross bar 91. The lengths of the blades 101:) and the-sockets 103 are such that they do not come into contact'with each other until after the lugs 94,198 and grooves 997, '97" are in engagement. The springc0ntact 104 for the push'button 10 5is connected by screw. 106 to the strap 102. The bar 107 serves as switch.'120 is secured to. the

thestationar-y contact for the contact springs the front and the ringing armature, 116 is operated rear. fa Other forms of book switchesmay beemthe electro-magnet 11'? at the The tter'is supported by a frame118 which is secured to theinsulating body in any suitable manner.

l'irthis-formof construction the telephone v back of the in sulating block 95 and operated by' the hook lever 121 which projects through thefront of thejplateiAlthough the receiver is not shown :in this figureiit should be understood thatany suitable aformimay be employed and that it would beconnected in the circuit in the usual manner; i y

In the iorm sh'own jons Sheet 4 thecasing is intended to be'mounted on the outer faceof the wallhThe. backplate' 130 is secured to the wall and carries the insulating block 131..with the socket 'eonta'cts 132. -The front part'of the casing consistsof the insulating block 133' and-the front plate 134. In this form all of. the'live parts are surrounded by a flange 135 which is. a ;part of the casing and secured to tlieback plate 130.- This wall 135 has inturnediflangeswi'tli lugs 136 which coincide with grooves 137 in'the sides of the insulating block 133 'soIasto bringthe parts.

into proper alignment. The contact blades 138 are secured to -th'e insulatingjb ody 133 in any suitable manner and connected to the appropriate elements of the telephone transmitter, receiver, vibrato'r an d ,,push button switches.

The switch 140 may be of -,any suitable character and operated by thehook lever 141 in the usual manner. The transmitter diaphra-gm 142 and microphonic device 143 are also secured 'to' the front member of the casing.

It will be seen from the foregoing that'in trated the wall member or back-partYof the casing can be installed and wired into the house line very readilyeven before theteleg phone instrument 'is available. After: the wiring is completed thefrontfipart of the casing is readily inse'rted'and securedgin place without requiring any'wiring to be done. Reversely the front part of thecasing-t'an be readily removed and-all the electric'alfconnections and devices readily inspected with; out connecting or disconnecting any wires;

Obviously the casing may be made of any suitable materialand built up of any nu'me ber of parts. It is most desirable however.

that the back part or plate'which is secured to .the wall be' formed of metal and thatgsuchl. part of the front member as directly ';'car,-'"

' transmitter diaphragm and niicriphone dc 'atiord a neat appearance andhave as few projecting parts as possible. g

I contemplate that other forms 01' plug-in connecting guides and contacts may be'employed within the spirit and scope of my in-' vention.

It should also be understood that the same construction may be usedfor various circuit arrangements with and without bells by snnply changing the connecting strips (for instance in Flg.

blades or the like. The recelver diaphragm may be used as a buzzer by using an interrupter in thecircuit at the point from which the call is to be made as set forth in my application 459,143 filed June t, 1930.

The construction of the casing with the \-'ice conc'entric with the concealed signal bell is claimed in my application #359,123 filed April 29, 1929.

The means for supporting the resilient switch contact fingers and their circuit terlninals together with a modified form of op erating receiver hook are claimed in my application #359,124'filed April 29, 1929.

The forms shown in Figs. (5 to 11 are claimed specificallv in my application- -#459,807.filed June l', 1930.

claim: i 1. A telephone comprising a back nun iber adapted to be secured to a wall. an msulating block carried thereby, circuit terminals onsaid block, a front member detacl'iably connected to the backmembcr and havmg an insulating part. a transmitter, a receiver and a hook switch carried by said insulating part and automaticallyengaging contacts carried by said insulating part and said block and connected respectively to said transmitter, receiver. and hook switch.

2. A telephone comprising a casing having hack and front ineml'iers, the hack member being adapted to be secured to a wall. circuit terminals carried by said back member. the

front member being detachahly connected to the back memberand having a transmitter, a receiver and a hook switcli'and autonmticall y engaging contacts carried by said front and back members andconnected respectively to said transmitter, receiver and hook switch.

3. A telephone comprlslng a back member ha-vinga series of sockets, a front memberhaving contacts adapted tosaid sockets. a. transmitter and receiver carried by the front member, said back member and said front member having intertitting aligning incur hers coacting with each other during the insertion of the contacts into the sockets.

1) and the connections be- ,tween the bus bar 72 and the var ous plug tacts to coact therewith, the front member and connected to someof therewith,

I containing members secured 4. A telephone comprising a back member havinga series of sockets, a front insulating body having contacts adapted to said sockets, atransmitter and receiver carried by the insulating body, said back member and said body having ii'iterfitting aligning members coacting with each other in advance of the insertion of the contacts'into the sockets.

5. A telephone comprising a back member having a series of sockets, a front member having contacts adapted to said sockets. a transmitter 'audaeceiver carried by the front member, said back memherand said front member having interfitt-ing aligning members coactin'g with each other during the insertion ofthe contacts into the sockets and means for securing the front and back incur hers together.

6. A telephone comprising a back member having contacts, a front member having (3011-. a. bus bar carried by the front contacts and a arms coac'ting with said having a push button.

7. A telephone comprising a casing com posed of aback member having contacts and a front member having contacts to coact a bus bar carried'by the front member and connected to some of the front contacts and a plurality of spring pressed push buttons coacting therewith.

8. contaming a transmitter and a switch. a switch hook operating entirely beneath said casing and a receiver adapted to engage said hoollf and having a cord connected to said 100 plurality of spring bus bar, each arm A telephone comprising a wall easing 9. A telephone comprising a wall casing I spring-pressed switch beneath said casing and a receiver adapted to engage said plunger and having a cord connected thereto. 7 i

10. A telephoneconstruction conn'u'ising a wall plate having a plurality of pairs of oppositely disposed slots for receiving means for attaching the plate to various types of outlet boxes, contact members carried by said plate and a front plate adapted to be secured to the back plate and carrying the transmitv ter and contacts connected thereto and, coacting withthe contacts on the back plate.

11. In a telephone crmstruction, an insulatinghody, a hook switchhavingcontzwt thereto, a transmitter. mounted in said body. cord terminalssecured to said body. and n'etormed fiat conducting strips connecting the respective elements according to a predetermined circuit arra'ngc ment. 12. In a telephone construction, an 1nsulating body, a series of contacts and terminals a transmitter and a switch. a. plunger depending from said nected to some of said terminals, a bus bar secured to said body and connected to one of said terminals and a push button connected to one of said terminals and adapted-to contact with said bus bar.

13. A telephone instrument com casing having back and front members, the back "member bein'g adapted to constitute a Wall support, circuit terminals carried by said back member, means for detachably connecting the front member to. the back member, the front member having interior connections for a transmitter, a receiver and a switch and automatically engaging contacts carried by said front and back members and connected respectively to said transmitter, receiver and switch terminals on the front member and to the terminals on the back member. r

14. A telephone instrument comprising a back member adapted to be supported on a wall and having a series of contacts and wiringterminals associated therewith a front member having a series of contacts adapted to' automatically engagesaid other contacts in a predetermined arrangement, a transmitter and a receiver having terminals carried by the front member and connected to said 0011'- tacts on the frontmember, said back member and said front member having"interfittingaligning members coacting with each otherand means for detachably securing the front member tothe back member with therespectivecontacts in engagement.

15. In a telephone construction, a wall plate, an insulating body thereon having contacts, a detachable front member having.

slidably connected with each other when the front member is applied to the back memher and a-number of switches inthe casing having stationary spring pressed contacts with exposed push buttons, the stationary switch contacts being connected to some of prising a acter described, a casing consisting of frontand back members thel'atter constituting a support and having circuit terminals and connectedv contacts and the front member 4 having pro]e'cting contacts at its rear adapted to have slidable engagement with the contacts on the front member, receiver and transmitter elementselectrically con nect'ed to the contacts carried by the front of.the casingand screws passing thru one of the members and having screw seated connections with the other member for holding the parts of the casing together with the contacts in proper relation.

18. A telephone. instrument comprising a casing having front and back members, circuit terminals and contacts' carried by the back member, a bell and vibrator therefor mounted in the'front member, transmitter and receiver terminals within the front memand connected to said latter terminals and to 1 said vibrator and means for detachably selcjuring the front member to the back mem 19. A telephone instrument comprising a' supporting member, a series of projecting contacts supported thereby vbut insulated 4 therefrom, each-contact having a terminal for external circuit connection, a detachable front member having contacts on. its rear adapted to slidably engage the contacts; on

the supporting member, and a transmitter, a receiver, and'a hook switch having terminals carried by the front member and connected respectively to contacts on the front member, and means for connecting the front member to the supporting member with the respective contacts in engagement, one of the members having a flange surrounding the other member and laterally surrounding the various terminals and contacts.

JOSEPH O. CADIEUX.

the terminals in the front member of the casing and the movable switch members being connected to other terminals in the front member, a transmitter and a receiver c on necteddso contacts on the front member and means fo'rksecuring the front and back members together.

7. In a telephone instrument of the charber, contacts carried by the front member 

